package com.jyu.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.jyu.reggie.common.R;
import com.jyu.reggie.entity.Employee;
import com.jyu.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request,@RequestBody Employee employee){

        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3、如果没有查询到则返回登录失败结果
        if(emp == null){
            return R.error("登录失败");
        }

        //4、密码比对，如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }

        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if(emp.getStatus() == 0){
            return R.error("账号已禁用");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * @description: 员工退出
     * @param request
     * @return: com.jyu.reggie.common.R<java.lang.String>
     * @date: 2023/7/26 14:35
     */
    @PostMapping("/logout")
    public R<String> logout( HttpServletRequest request ){
        request.getSession().removeAttribute("employee");
        return  R.success("退出成功");
    }

    /**
     * @description: 添加员工信息
     * @param request
     * @param employee
     * @return: com.jyu.reggie.common.R<java.lang.String>
     * @date: 2023/7/26 20:35
     */
    @PostMapping
    public R<String> save ( HttpServletRequest request, @RequestBody Employee employee) {
        log.info("新增员工， 员工信息： {}", employee.toString());
        // MD5 加密 md5DigestAsHex  解密：
        String password = DigestUtils.md5DigestAsHex("123456".getBytes());
        employee.setPassword(password);
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());

        //前面设置的 employee 是一个 id。
//        Long employeeId = (Long) request.getSession().getAttribute("employee");
//        employee.setCreateUser(employeeId);
//        employee.setUpdateUser(employeeId);

        // 调用mybatis plus
        employeeService.save(employee);

        return R.success("新增员工成功");
    }

    /**
     * @description: 分页查询
     * @param page
 * @param pageSize
 * @param name
     * @return: com.jyu.reggie.common.R<com.baomidou.mybatisplus.extension.plugins.pagination.Page>
     * @date: 2023/7/26 21:06
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){
        log.info("page={},  pageSize={}, name={}",page, pageSize,name);

        //分页构造器
        Page pageInfo = new Page(page, pageSize);

        //条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();

        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName,name);

        queryWrapper.orderByDesc(Employee::getUpdateTime);

        employeeService.page(pageInfo,queryWrapper);

        return R.success(pageInfo);

    }

    /**
     * @description: 更新员工信息
     * @param request
 * @param employee
     * @return: com.jyu.reggie.common.R<java.lang.String>
     * @date: 2023/7/26 22:12
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee){

        Long empId = (Long) request.getSession().getAttribute("employee");

        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);

        employeeService.updateById(employee);


        return R.success("员工信息修改成功");
    }

    /**
     * @description: 根据id 查询 员工对象
     * @param id
     * @return: com.jyu.reggie.common.R<com.jyu.reggie.entity.Employee>
     * @date: 2023/7/26 22:12
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        Employee emp = employeeService.getById(id);
        if(emp != null) {
            return R.success(emp);
        }

        return R.error("没有查询到对于员工信息");
    }

}
